Bavarian Exclusive has catless downpipes in stock for your N54/N55! Give us a call at 714-672-0576 for more information or to place your order!!! We strongly back Berk Technology and Macht Schnell because of their GREAT QUALITY, FITMENT, POWER GAINS, AND FINISHES at a GREAT LOW PRICE! Downpipes are key to unlocking more power for your turbocharged car and is the best bang for your buck bolt on! "Race proven, Dyno tested!"